Circularly Polarized High Gain Monopole Antenna for 5G Applications

In order to effectively utilize the radio frequency (RF) signals present in this ambient environment, efficient RF front-ends are significant. The front-ends must possess design-feasibility, robust circular polarization (CP) characteristics, & consistent antenna efficiency in the sub-6 GHz band, with high CP antenna gain. Therefore, CP-printed monopole inspired by metasurface (MS) is investigated in this article. Broadband CP is achieved with the fractional bandwidth <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$> 15%$</tex> , CP gain <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$> 7.5$</tex> dBic, directional radiation pattern exceeding <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">100∘-120∘</tex> with 3-dB angular beamwidth in the bands, & enhanced front-to-back ratio (FBR) is within an acceptable parameters. Then, achieved results were then compared to the performance compromises derived from the latest advancements. Hence, a comprehensive design was shown to address prevalent limitation encountered by monopole antennas in the expansive regions of 5G-enabled urban transformation, by utilizing RF application, particularly in the lower 5G band.